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Magma supply path beneath Mt. Asama volcano, Japan
Author(s) -
Takeo Minoru,
Aoki Yosuke,
Ohminato Takao,
Yamamoto Maki
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl026247
Subject(s) - geology , volcano , magma , seismology , impact crater , lateral eruption , magma chamber , geodetic datum , explosive eruption , geodesy , physics , astronomy
Obtaining a sharp image of magma supply path through dense geophysical observations is important for forecasting time and magnitude of hazardous future eruptions. Here we reveal a clear magma plumbing system using dense seismic and geodetic networks around Mt. Asama, central Japan. Magma intrusions occurred several times beneath the western flank of Mt. Asama, forming a WNW‐ESE directed zone with 1 km below sea level. The eastern end of this zone connects a narrow vertical pathway extending right under the summit crater, which erupted in 2004. Monitoring magmatic activity with a well‐designed observational network is vital to mitigate future volcano hazards.